Bonded versus banded first molar attachments: a randomized controlled clinical trial

• Localización: Journal of orthodontics, ISSN-e 0301-228X, ISSN 1465-3125, Nº. 2-34, 2007, págs. 128-136
• Idioma: inglés
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• Resumen

  • Objective: To compare the clinical failure rates of bonded first molar tubes with those of cemented bands during fixed appliance therapy.

    Design: Prospective randomized controlled clinical trial.

    Setting: Two UK hospital orthodontic clinics, February 2001�December 2004.

    Participants: Hospital waiting list patients needing fixed appliances (n = 110).

    Method: Patients were randomly allocated to two groups. Experimental group patients (n = 55) received single first molar tubes (n = 181) bonded with a no-mix chemically cured composite (Rely-A-Bond) after a 30-second etch. Control group patients (n = 55) were treated with bands (n = 186) cemented with Intact glass ionomer cement (GIC). First-time failures were recorded together with the time of failure. All patients were followed to the end or discontinuation of treatment.

    Results: First-time failures: bands = 18.8%; bonds = 33.7 %. Bonded tubes were more likely to fail [RR 2.4; 95% CI (1.4, 4.1)] compared with bands. Experimental group patients also had more bracket failures (P = 0.009), when analysed at patient level.

    Conclusion: First molar tubes bonded with Rely-A-Bond composite showed a significantly higher first-time failure rate than bands cemented with Intact GIC.